Affiliation: | 1. Department of Pediatrics, Endocrinology, Diabetology with Cardiology Division, Medical University of Bia?ystok, , Bia?ystok, Poland;2. Department of Pediatrics, Medical University of Warsaw, , Warsaw, Poland;3. Department of Pediatrics, Oncology, Hematology and Diabetology, Medical University of Lodz, , Lodz, Poland |